Hello,
with Fedora 16 comes grub2 and its integration with KDM: normally, it is possible to chose another system to restart with from KDM, like this:
However for me it doesn't work, although I have informed KDM so (System Settings > Login Screen > Shutdown > Boot manager) and modified /etc/default/grub as indicated http://ksmanis.wordpress.com/2011/04...pport-for-kdm/

Hi,
thanks for the suggestion.
I have tested with "GRUB_SAVEDEFAULT=true": it's working... BUT it is not what I want:
With this option, the system you choose in grub becomes the new default entry at the next startup.
It's the only purpose of it (see http://www.gnu.org/software/grub/manual/grub.html for instance).

near the top, but the menuentry definitions do not contain "savedefault".

The only other thing I can think is that this machine has been rebooted at least once with the default grub config which I believe includes "GRUB_SAVEDEFAULT=true". That will have forced grub to write the saved entry to the grub environment as per the definition of the function savedefault in /boot/grub2/grub.cfg.

Thanks, this time it works (finally )
The problem was, as you mentioned, the option "GRUB_SAVEDEFAULT=true" which was activated in my /etc/default/grub
I have removed it, regenerated grub.cfg => I have the option to reboot instantly.

PS: do you think it's a bug ? I don't see why the option GRUB_SAVEDEFAULT is not compatible with the ability to reboot from KDE ?

Thanks, this time it works (finally )
The problem was, as you mentioned, the option "GRUB_SAVEDEFAULT=true" which was activated in my /etc/default/grub
I have removed it, regenerated grub.cfg => I have the option to reboot instantly.

PS: do you think it's a bug ? I don't see why the option GRUB_SAVEDEFAULT is not compatible with the ability to reboot from KDE ?

I don't think it is a bug, since i still have the option "GRUB_SAVEDEFAULT=true" in my /etc/default/grub and the reboot menu works. Also i did the same to my home pc and got the reboot menu working. Both systems have that option.

But i think the bug is in the boot menu not recognizing and using grub2 instead of old grub

I don't think it is a bug, since i still have the option "GRUB_SAVEDEFAULT=true" in my /etc/default/grub and the reboot menu works. Also i did the same to my home pc and got the reboot menu working. Both systems have that option.

But i think the bug is in the boot menu not recognizing and using grub2 instead of old grub

OK, you're right. The problem was not the option "GRUB_SAVEDEFAULT=true", but the fact that the line

set default="${saved_entry}"

is transformed to

set default=0

in /boot/grub2/grub.cfg although "GRUB_DEFAULT=saved" is in /etc/default/grub.
This happens after a kernel update... (I haven't noticed that in my previous post since I had regenerated /boot/grub2/grub.cfg)